Bio:Suffering from a hyper-accelerated metabolism, Bart Allen was aging at a faster rate than that of any human being thus causing him to appear the age of twelve when he was chronologically only two years old. To prevent him from developing mental health problems he was raised in a virtual reality machine which created a simulated world that kept pace with his own scale of time. When it became clear that this method was not helping, his grandmother, Iris Allen, took him back in time to the present where The Flash, Wally West, tracked him down in a race across the world. By forcing Bart into an extreme burst of speed, Wally managed to shock his hyper-metabolism back to normal. Because he had spent the majority of his childhood in a simulated world, Bart had no concept of danger and was prone to leaping before he looked. The youth proved to be more trouble than Wally could handle, and he was palmed off onto retired superhero speedster Max Mercury, who moved Bart to Manchester, Alabama. As retconned in Impulse #50, Batman named him "Impulse" as a warning, not as a compliment.

Bart joined the Titans early in his career before going on to become one of the founding members (along with Robin and Superboy) of the superhero team Young Justice. For a time, Impulse became the owner of a spaceship granted to him by a rich sultan in appreciation for having helped save his castle. The team used this ship to reunite Doiby Dickles with his queen and restore the rightful rule of Myrg. Impulse stayed with Young Justice for an extensive period of time during which he developed the ability to make speed-force energy duplicates. This allowed him to be in multiple places at once. The newly acquired power proved useful until one of the duplicates was killed during the "Our Worlds at War" storyline when half the team was lost on Apokolips. Bart quit Young Justice temporarily as the death of his duplicate led him to come to terms with his own mortality.

Following Max Mercury's disappearance, Bart was taken in by Jay Garrick, the first Flash, and his wife Joan. After the breakup of Young Justice, Bart joined some of his former teammates in a new line-up of the Teen Titans.

Famous Quotes: - Add a Famous Quote "Wonder Girl: Impulse, what about you? Would you be normal if you could?
Impulse: I don't understand the question. I AM normal. It's the rest of the world that's weird.
-Young Justice"